21601575

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 42298880

約数和(自身を除く): 20697305

約数列:

[1, 3, 5, 9, 15, 19, 25, 31, 45, 57, 75, 93, 95, 155, 163, 171, 225, 279, 285, 465, 475, 489, 589, 775, 815, 855, 1395, 1425, 1467, 1767, 2325, 2445, 2945, 3097, 4075, 4275, 5053, 5301, 6975, 7335, 8835, 9291, 12225, 14725, 15159, 15485, 25265, 26505, 27873, 36675, 44175, 45477, 46455, 75795, 77425, 96007, 126325, 132525, 139365, 227385, 232275, 288021, 378975, 480035, 696825, 864063, 1136925, 1440105, 2400175, 4320315, 7200525, 21601575]

約数ペア:

[(1, 21601575), (3, 7200525), (5, 4320315), (9, 2400175), (15, 1440105), (19, 1136925), (25, 864063), (31, 696825), (45, 480035), (57, 378975), (75, 288021), (93, 232275), (95, 227385), (155, 139365), (163, 132525), (171, 126325), (225, 96007), (279, 77425), (285, 75795), (465, 46455), (475, 45477), (489, 44175), (589, 36675), (775, 27873), (815, 26505), (855, 25265), (1395, 15485), (1425, 15159), (1467, 14725), (1767, 12225), (2325, 9291), (2445, 8835), (2945, 7335), (3097, 6975), (4075, 5301), (4275, 5053)]